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IC-F4
Icom IC-F4 User Manual
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F3/S
The combination of this page and the next page
shows the unit layout in the same configuration as
the actual P
.C. Board.
BATT
VOLIN
VOLOUT
GND
VCC
to
MAIN UNIT
J7
9 - 2 VR BOARD (common)
• TOP
VIEW
9 - 1
SECTION 9
BOARD LA
YOUTS
9-1 IC-F3/S MAIN UNIT
• TOP
VIEW
VCC
VOL GND
VOL OUT
VOL IN
HV
to VR UNIT
SP
SPG
P1
ANTENNA
SPEAKER
SP1
MICROPHONE
36
38
Table of Contents
Default Chapter
3
Table of Contents
3
Specifications
4
IC-F3/S
5
Inside Views
5
IC-F4/S
6
Main Unit
6
Disassembly Instruction
7
Optional Unit Installations
8
Circuit Description
9
Receiver Circuits
9
Transmitter Circuits
10
Pll Circuit
11
Power Supply Circuits
11
Cpu Port Allocations
12
Adjustment Procedures
13
Preparation
13
PLL ADJUSTMENT for IC-F3/S
15
TRIMMER ADJUSTMENT for IC-F3/S
16
TRANSMITTER ADJUSTMENT for IC-F3/S
17
RECEIVER ADJUSTMENT for IC-F3/S
18
PLL ADJUSTMENT for IC-F4/S
19
TRIMMER ADJUSTMENT for IC-F4/S
20
TRANSMITTER ADJUSTMENT for IC-F4/S
21
RECEIVER ADJUSTMENT for IC-F4/S
22
Parts List
23
Cabinet Parts
34
Mechanical Parts and Disassembly
34
Board Layouts
37
IC-F3/S Main Unit
37
Vr Board
37
IC-F4/S Main Unit
39
Block Diagram
41
IC-F3/S
41
IC-F4/S
42
Voltage Diagram
43
IC-F3/S
43
IC-F4/S
47
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Icom IC-F4 Specifications
General
Brand
Icom
Model
IC-F4
Category
Transceiver
Language
English
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